and again:
and please deactivate "alarm monitoring" until we found the reason for your issue, maybe there is also another message displayed in the status field

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1. please deactivate alarm monitoring (uncheck both options)
2. tell me what the status field shows AFTER this deactivation
3. show me a NEW screenshot of pump 2

after this is done:
describe please exactly the measurement cycle
is it only getting sample water and after that it is IMMEDIATELY drained trough the waste line
or is there a measurement between? how long? getting sample water should take about 2-3 minutes, draining 2-3 minutes, and the actual measurement process between about 5-10 minutes

if there is no measurement then
a) there arrives no sample water
b) the pH electrode calibration was not OK

BTW: the pH-electrode is plugged in the right BNC port, not in the doser BNC, right?

better also post a few pictures of your entire setup, front and rear so I can see all tubes and wiring

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then there is only one thing left: the pH-measurement is not correct
there are a few reasons I could think of, I already mentioned them above

our support team will continue to take care of you tomorrow morning

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As I also have low values on some pumps, I tell myself that maybe the containers we use to measure the amount of water pump during calibration are not accurate or reliable. Maybe that it would be necessary to provide a reliable and calibratoed containers with Doser2 that guarantees the value of calibrations. As before, KH Director, it was not very important, but with the KH Director, it's very.

As I also have low values on some pumps, I tell myself that maybe the containers we use to measure the amount of water pump during calibration are not accurate or reliable. Maybe that it would be necessary to provide a reliable and calibratoed containers with Doser2 that guarantees the value of calibrations. As before, KH Director, it was not very important, but with the KH Director, it's very.

I use a precise letter scale (0.1g resolution) for calibration

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I am having the exact same issue with my KH Director. I have been talking to Vinny@GHL USA about it and just saw this post.

Here is my issue forwarded from my email to Vinny....

Vinny,

Ok, so after getting home and testing things out. Pump 1 on the Dosing unit is no longer seizing up randomly. It’s working fine now.

Here are some pictures of my settings for pumps 5, 6, and 7, for the KHD. Whether I run the KHD as a “timed” measurement or a measurement which I choose the same result happens. The chamber on the KHD flushes, then drains, then fills again… instead of adding KHD reagent here it discharges the chamber and finishes. I don’t get any error codes or messages and the status during the whole process is “Measuring.” Once it finishes discharging the status goes back to “OK.”

I am having the exact same issue with my KH Director. I have been talking to Vinny@GHL USA about it and just saw this post.

Here is my issue forwarded from my email to Vinny....

Vinny,

Ok, so after getting home and testing things out. Pump 1 on the Dosing unit is no longer seizing up randomly. It’s working fine now.

Here are some pictures of my settings for pumps 5, 6, and 7, for the KHD. Whether I run the KHD as a “timed” measurement or a measurement which I choose the same result happens. The chamber on the KHD flushes, then drains, then fills again… instead of adding KHD reagent here it discharges the chamber and finishes. I don’t get any error codes or messages and the status during the whole process is “Measuring.” Once it finishes discharging the status goes back to “OK.”